17 May - 10 min Omsi Bus Simulator SD D89 on the Grundorf Map. I have put a little bit of time into OMSI in the past, but due to some . The Grundorf map is just a very simple tutorial map for learning the game. In case of questions regarding the installation or activation of OMSI 2 or problems in . Select the Grundorf map and tick „Load map without buses“. Click on.